Zobrazeno 1 - 10
of 347
pro vyhledávání: '"Ortolani Michele"'
Autor:
Talamas Simola Enrico, Ortolani Michele, Di Gaspare Luciana, Capellini Giovanni, De Seta Monica, Virgilio Michele
Publikováno v:
Nanophotonics, Vol 13, Iss 10, Pp 1781-1791 (2024)
We present a theoretical investigation of guided second harmonic generation at THz frequencies in SiGe waveguides embedding n-type Ge/SiGe asymmetric coupled quantum wells to engineer a giant second order nonlinear susceptibility. A characteristic of
Externí odkaz:
https://doaj.org/article/9a99e09ac45e4afcb01f8675bf07f7b5
Autor:
Campagna Elena, Talamas Simola Enrico, Venanzi Tommaso, Berkmann Fritz, Corley-Wiciak Cedric, Nicotra Giuseppe, Baldassarre Leonetta, Capellini Giovanni, Di Gaspare Luciana, Virgilio Michele, Ortolani Michele, De Seta Monica
Publikováno v:
Nanophotonics, Vol 13, Iss 10, Pp 1793-1802 (2024)
A parabolic potential that confines charge carriers along the growth direction of quantum wells semiconductor systems is characterized by a single resonance frequency, associated to intersubband transitions. Motivated by fascinating quantum optics ap
Externí odkaz:
https://doaj.org/article/ec7858f2ade342178c5743bc8ccbefb7
Autor:
Rossetti, Andrea, Hu, Huatian, Venanzi, Tommaso, Bousseksou, Adel, De Luca, Federico, Deckert, Thomas, Giliberti, Valeria, Pea, Marialilia, Sagnes, Isabelle, Beaudoin, Gregoire, Biagioni, Paolo, Baù, Enrico, Maier, Stefan A., Tittl, Andreas, Brida, Daniele, Colombelli, Raffaele, Ortolani, Michele, Ciracì, Cristian
The development of nanoscale nonlinear elements in photonic integrated circuits is hindered by the physical limits to the nonlinear optical response of dielectrics, which requires that the interacting waves propagate in transparent volumes for distan
Externí odkaz:
http://arxiv.org/abs/2402.15443
Publikováno v:
EPJ Applied Metamaterials, Vol 9, p 13 (2022)
Heavily doped semiconductors have emerged as low-loss and tunable materials for plasmonics at mid-infrared frequencies. We analyze the nonlinear optical response of free electrons and show how nonlinear optical phenomena associated with high electron
Externí odkaz:
https://doaj.org/article/af936dc646514379a09bb35ddd49dc1c
Autor:
Graziotto, Lorenzo, Macheda, Francesco, Venanzi, Tommaso, Marchese, Guglielmo, Sotgiu, Simone, Ouaj, Taoufiq, Stellino, Elena, Fasolato, Claudia, Postorino, Paolo, Metzelaars, Marvin, Kögerler, Paul, Beschoten, Bernd, Calandra, Matteo, Ortolani, Michele, Stampfer, Christoph, Mauri, Francesco, Baldassarre, Leonetta
Few-layer graphene possesses low-energy carriers which behave as massive fermions, exhibiting intriguing properties in both transport and light scattering experiments. Lowering the excitation energy of resonance Raman spectroscopy down to 1.17 eV we
Externí odkaz:
http://arxiv.org/abs/2310.04071
Autor:
Temperini Maria Eleonora, Polito Raffaella, Intze Antonia, Schade Ulrich, Puskar Ljljana, Ritter Eglof, Baldassarre Leonetta, Ortolani Michele, Giliberti Valeria
Publikováno v:
EPJ Web of Conferences, Vol 255, p 13001 (2021)
The channelrhodopsin-ChR2 is a light-sensitive transmembrane protein that acts as a selective ion channel between the intra- and the extra-cellular environments. In the last decade, ChR2 has proven to be essential for optogenetics, because, if expres
Externí odkaz:
https://doaj.org/article/76c8ea761674477d9204a57db9534a67
Autor:
Venanzi, Tommaso, Graziotto, Lorenzo, Macheda, Francesco, Sotgiu, Simone, Ouaj, Taoufiq, Stellino, Elena, Fasolato, Claudia, Postorino, Paolo, Mišeikis, Vaidotas, Metzelaars, Marvin, Kögerler, Paul, Beschoten, Bernd, Coletti, Camilla, Roddaro, Stefano, Calandra, Matteo, Ortolani, Michele, Stampfer, Christoph, Mauri, Francesco, Baldassarre, Leonetta
We report on resonance Raman spectroscopy measurements with excitation photon energy down to 1.16 eV on graphene, to study how low-energy carriers interact with lattice vibrations. Thanks to the excitation energy close to the Dirac point at $\mathbf{
Externí odkaz:
http://arxiv.org/abs/2212.01342
Autor:
Malerba, Mario, Sotgiu, Simone, Schirato, Andrea, Baldassarre, Leonetta, Gillibert, Raymond, Giliberti, Valeria, Jeannin, Mathieu, Manceau, Jean-Michel, Li, Lianhe, Davies, Alexander Giles, Linfield, Edmund H., Alabastri, Alessandro, Ortolani, Michele, Colombelli, Raffaele
Recently, the concept of strong light-matter coupling has been demonstrated in semiconductor structures, and it is poised to revolutionize the design and implementation of components, including solid state lasers and detectors. We demonstrate an orig
Externí odkaz:
http://arxiv.org/abs/2211.14911
Autor:
Sotgiu, Simone, Venanzi, Tommaso, Macheda, Francesco, Stellino, Elena, Ortolani, Michele, Postorino, Paolo, Baldassarre, Leonetta
Resonance Raman scattering, which probes electrons, phonons and their interplay in crystals, is extensively used in two-dimensional materials. Here we investigate Raman modes in MoSe$_2$ at different laser excitation energies from 2.33 eV down to the
Externí odkaz:
http://arxiv.org/abs/2208.02505
Autor:
Rusconi, Francesco, Finazzi, Marco, Stormonth-Darling, John M., Mills, Gordon, Badioli, Michela, Baldassarre, Leonetta, Ortolani, Michele, Biagioni, Paolo, Giliberti, Valeria
Infrared (IR) nanospectroscopy by photothermal induced resonance (PTIR) is a novel experimental technique that combines the nanoscale resolution granted by atomic force microscopy (AFM) and the chemical labelling made possible by IR absorption spectr
Externí odkaz:
http://arxiv.org/abs/2111.07303